Interrogation sign of ( ? )

A sign used in punctuation. A note of interrogation is used at the end of an interrogative sentence; that is, whenever a question is asked. Sometimes, however, several apparent questions are included in one sentence, when it may not be necessary to use more than one interrogation at the end. These examples contain but one cumulative question, to which but one, if any, answer is required. Were three distinct questions put, and an answer required to each, then each interrogation should be marked with its appropriate sign, for there would be so many interrogative sentences. When sentences or expressions which are affirmative when spoken or written are quoted by a writer in the form of a question, the interrogative mark should follow the quotation marks and not precede them. The reason is clear; the words quoted are those of another, but the question is the writer’s own. An interrogation should not be used in cases when it is only stated that a question has been asked, and where the words are not used as a question. In France and other countries on the Continent the interrogation is used, inverted, at the commencement of quotations as well as at the end. A thin space is usually placed before a sign of interrogation.